Crista terminalis
Crista terminalis | |
---|---|
Details | |
Identifiers | |
Latin | crista terminalis atrii dextri |
TA98 | A12.1.01.003 |
TA2 | 4025 |
FMA | 9236 |
Anatomical terminology |
The crista terminalis (also known as the terminal crest,[
Anatomy
The crista terminalis generally takes the form of a smooth-surfaced, crescent-shaped thickened portion of heart muscle at the opening into the right atrial appendage.[citation needed] It consists of fibromuscular tissue.[3]
Features
On the external aspect of the right atrium, corresponding to the crista terminalis, is a groove - the terminal sulcus.[citation needed]
The crista terminalis provides the origin for the pectinate muscles.[citation needed]
The sinoatrial node is located in the superior part of the crista terminalis at the junction of the right atrium, and superior vena cava.[2]: 60
Development
During the development of the human heart, the right horn and transverse portion of the
Clinical significance
A prominent crista terminalis may be mistaken for a cardiac mass during heart imaging; a prominent crista terminalis appears as a hyperechoic ridge on echocardiography, and homogenous to adjacent atrial wall on CT and MRI.[3]
See also
References
- ^ a b Gray, Henry (1918). Gray's Anatomy (20th ed.). p. 509.
- ^ OCLC 1044772257.)
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: CS1 maint: location missing publisher (link - ^ ISBN 978-0-323-44227-5, retrieved 2020-11-17
- ^ OCLC 1042400100.)
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External links
- Anatomy photo:20:13-0106 at the SUNY Downstate Medical Center - "Heart: Chamber of Right Atrium"
- Atlas image: ht_rt_atrium at the University of Michigan Health System - "Right atrium, internal structure, anterior view"
- Diagram at ctsnet.org